通过电子屏障电化学系统同时去除Cr (VI),As (III) 和硫胺:试点研究
Jong-Gook Kim1, Muhammad Fahad Ehsan2, Akram N Alshawabkeh2
1Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA; Department of Environment and Energy and Soil Environment Research Center, Jeonbuk National University, 567 Baekje-daero, Deokjin, Jeonju, Jeollabukdo 54896, Republic of Korea.
Journal of hazardous materials
|March 2, 2025
概括
这项研究引入了一种新的电化学系统,使用电子屏障和石进行长期地下水整治. 该系统有效地去除,和硫胺一年,提供可持续的解决方案.
科学领域:
- 环境科学 环境科学
- 电化学 电化学 电化学
- 地质化学 地质化学
背景情况:
- 现场电化学修复对地下水清洁有希望,但通常仅限于短期应用.
- 不断且同时去除各种污染物仍然是现有技术面临的挑战.
研究的目的:
- 开发和评估一种新的电化学系统,用于长期的,现场的地下水整治.
- 评估将电阻隔 (电子阻隔) 与石结合用于去除As,Cr,VI和硫胺的有效性.
主要方法:
- 一个通过流的电化学反应器系统是使用电子屏障和pyrite设计的.
- 测试了两个尺度:一个实验室规模的沙箱与硫胺和一个试点规模的沙箱与,Cr和硫胺的混合物.
- 污染物去除效率和废水pH值在一年内进行了监测.
主要成果:
- 实验室规模的系统实现了100%的硫胺去除.
- 试点规模的系统证明了污染物混合物在一年内100%的去除.
- 废水的pH值在没有外部中和的情况下保持中性,这归因于酸氧激活矿.
结论:
- 合并的电化学系统与矿提供了一个有效和可持续的解决方案,用于同时去除有机和无机地下水污染物.
- 活性化,产生溶解的铁和铁氧化物,作为污染物吸附和沉的关键机制.
- 这项技术显示出长期的潜力,在现场的地下水整治应用.
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